Triagebot (AKA rustbot) is a general-purpose bot used for a wide variety of tasks in the rust-lang organization, usually involving sending commands via GitHub or Zulip comments. The following pages explain the available features.

Commands are usually issued by writing comments starting with the text @rustbot. The commands that are available depends on which repository you are using. Each repository has a triagebot.toml where you can see which features are enabled.

For example, the following comment:

@rustbot label A-diagnostics A-macros

will set the given labels on a GitHub issue or pull request, even for people who don’t have direct permissions to do that in the GitHub UI.

GitHub commands

Commands on GitHub issues or pull requests are usually issued by writing @rustbot followed by the command anywhere in the comment. @rustbot will ignore commands in markdown code blocks, inline code spans, or blockquotes. Multiple rustbot commands can be entered in a single comment.

Triagebot also allows editing of a comment. If you don’t modify the text of the command, then triagebot will ignore the edit. However, if you modify an existing command, or add new ones, then those commands will be processed.


Individual GitHub repositories can configure triagebot features via a file called triagebot.toml in the root of the default branch. The following pages explain the syntax needed for each feature.

For example, the rust-lang/rust configuration file is at

When first adding triagebot.toml to a new repository, you will need to enable permissions for the bot to operate. This can be done by posting a PR to the rust-lang/team database to add bots = ["rustbot"] to the repository in the repos/rust-lang directory.

Common command summary

The following are some common commands you may see on rust-lang/rust.

@rustbot claimAssigns an issue to yourself.Issue Assignment
@rustbot release-assignmentRemoves your assignment to an issue.Issue Assignment
@rustbot assign @octocatAssigns an issue to a specific user.Issue Assignment
@rustbot readyIndicates a PR is ready for review.Shortcuts
@rustbot authorIndicates a PR is waiting on the author.Shortcuts
@rustbot blockedIndicates a PR is blocked on something.Shortcuts
@rustbot label A-diagnostics A-macrosAdds two labels to an issue or PR.Labeling
@rustbot label -P-highRemoves a label from an issue or PR.Labeling
@rustbot ping windowsPosts a comment pinging the Windows ping group.Pinging
@rustbot prioritizeRequests prioritization from the Prioritization WG.Prioritization
r? @octocatAssigns a PR to a user.PR Assignment
r? libsAssigns to a random person in the libs review group.PR Assignment
r? rust-lang/cargoAssigns a random person from the cargo team.PR Assignment

The following are some common commands you may see on Zulip:

@triagebot readWaits for people to read a document in a meeting.Zulip Meeting Management
@triagebot end-topicChecks if everyone is done discussing a topic in a meeting.Zulip Meeting Management
@triagebot end-meetingChecks if everyone is ready to finish a meeting.Zulip Meeting Management


The source code for triagebot can be found at If you are interested in extending triagebot, the documentation there should provide some guidance on how to get started.